SPRINGFIELD, Ohio (AP)  Authorities say a senior prank that damaged 24 school buses has led to felony charges against four students in a western Ohio school district.

Clark County sheriff’s officials say the teens are accused of removing valve stems from tires on buses used by Northwestern Local School District in Springfield. Authorities say the vandalism forced school officials to cancel all classes in the 2,000-student district on Friday. School officials estimate repairs will cost thousands of dollars.

A statement from the sheriff’s office says the students also left behind a message written in chalk that read: “You have been pranked by seniors 2015” and “To have school or to not have school?”

Authorities say the students are each charged with one count of vandalism and one count of disrupting public services.